Remove unused YAML dependency (#975)

Author: bclyons12

Project.toml

@@ -68,7 +68,6 @@ TimerOutputs = "a759f4b9-e2f1-59dc-863e-4aeb61b1ea8f"
 TroyonBetaNN = "c0158764-c6e1-428b-a545-31826f389bc8"
 TurbulentTransport = "9bf5e8f4-5746-4003-bc69-ef83265c10ca"
 VacuumFields = "9d9223b5-c5da-4bf4-abee-2a8bb6775a49"
-YAML = "ddb6d928-2868-570f-bddf-ab3f9cf99eb6"
 
 [weakdeps]
 ThermalSystemModels = "68b8b4ac-b179-4f07-8ae9-c1f1360acbca"
@@ -138,4 +137,3 @@ TroyonBetaNN = "1"
 TurbulentTransport = "1"
 VacuumFields = "6"
 Weave = "0.10"
-YAML = "0.4"